Data Zone
Justification of Red List category
This species is at risk from invasive predators, which has led to it only being found where these do not occur. As such it is believed that the population of this species may be declining at least at a moderate rate. The species is therefore listed as Near Threatened.
Population justification
The global population size has not been quantified directly, but this species is described as 'fairly common' (Stotz et al. 1996). Based on an observed population density of congeners in Argentina (C. fuscus: 6-26 individuals/km2; C. oustaleti: individuals/km2; C. patagonicus: 4-20 individuals/km2; Santini et al. 2018) and assuming that only 10% of the mapped range is occupied to account for its sensitivity to introduced predators, the population may number 4,400-28,600 individuals, which roughly equates to 3,000-19,000 mature individuals.
Based on observational records (per eBird 2020), it is assumed that the species forms several disjunct subpopulations.
Trend justification
The population trend has not been quantified directly, but it is assumed that the species used to be more widespread (del Hoyo et al. 2020). The decline is likely caused by predation by invasive mammals, and the species is now largely restricted to predator-free islands (del Hoyo et al. 2003, 2020).
The rate of decline is tentatively placed in the band 20-29% over three generations (10.8 years). There is no indication of a decrease in threats, and hence the decline is assumed to go on at this rate into the future.
The species occurs in extreme southern South America on Brecknock Peninsula (southwestern Tierra del Fuego), Navarino Island and Cape Horn Archipelago (Chile), as well as Staten Island (Isla de los Estados) (Argentina).
This species occurs in coastal areas, particularly around rocky beaches and near colonies of marine mammals and seabirds (del Hoyo et al. 2020).
The species is at risk from invasive predators such as cats Felis catus and rats Rattus spp., which has led to the species only being found where these do not occur (del Hoyo et al. 2020). The species may be abundant at the localities where it has not been extirpated by invasives, but its tameness means that once an invasive predator arrives at one of these localities it can quickly remove the population.
Conservation Actions Underway
No targeted actions are known.
Conservation Actions Proposed
Quantify the population size. Monitor the population trend. Protect predator-free areas within the range. Remove invasive predators from areas to help the species recover.
Text account compilers
Hermes, C.
Contributors
Butchart, S., Derhé, M., Ekstrom, J. & Westrip, J.R.S.
Recommended citation
BirdLife International (2024) Species factsheet: Black Cinclodes Cinclodes maculirostris. Downloaded from
https://datazone.birdlife.org/species/factsheet/black-cinclodes-cinclodes-maculirostris on 23/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 23/11/2024.